D20/100
NEW LONDON DEPT. OF PUBLIC UTILITIES — Water Quality Report 2026
Serving 27,620 people · Connecticut
Water Source
Surface Water
County
—
System ID
CT0950011
Violations
77
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
chlorate | 230.00 µg/L | — | Above Goal |
EPA Violation History
3
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2025 – August 7, 2025Enforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2024 – July 8, 2024Enforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2023 – July 25, 2023Enforcement: Resolving — corrective action underway
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About NEW LONDON DEPT. OF PUBLIC UTILITIES
Is NEW LONDON DEPT. OF PUBLIC UTILITIES water safe to drink?
NEW LONDON DEPT. OF PUBLIC UTILITIES water receives a grade of D (20/100), which is considered poor. 0 contaminant(s) exceed EPA legal limits and 77 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has NEW LONDON DEPT. OF PUBLIC UTILITIES detected?
69 contaminants were tested in NEW LONDON DEPT. OF PUBLIC UTILITIES's water. Notable contaminants include chlorate. No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does NEW LONDON DEPT. OF PUBLIC UTILITIES have any EPA violations?
Yes, NEW LONDON DEPT. OF PUBLIC UTILITIES has 77 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MR.
How many people does NEW LONDON DEPT. OF PUBLIC UTILITIES serve?
NEW LONDON DEPT. OF PUBLIC UTILITIES serves approximately 27,620 people, Connecticut. The system provides water to 2 communities: New London, Waterford.
What type of water does NEW LONDON DEPT. OF PUBLIC UTILITIES provide?
NEW LONDON DEPT. OF PUBLIC UTILITIES sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is CT0950011.
How does NEW LONDON DEPT. OF PUBLIC UTILITIES compare to other utilities in Connecticut?
NEW LONDON DEPT. OF PUBLIC UTILITIES scores 20/100 with a grade of D (poor). This score suggests significant water quality concerns relative to other utilities. Visit our Connecticut state page for a full comparison of water systems.